It protects against environmental hazards such as wind and sun.
它防范诸如狂风和烈日等环境危害。
While fossil fuels—coal, oil, gas—still generate roughly 85 percent of the world's energy supply, it's clearer than ever that future belongs to renewable sources such as wind and solar.
虽然化石燃料——煤炭、石油、天然气——仍占世界能源供应的大约85%,但比以往任何时候都更清楚的是,未来属于可再生能源,如风能和太阳能。
Already some renewable technologies, such as wind power, are economically viable, he says.
Stuggins说,现在已经有些可再生能源技术(如风力发电)具备了经济可行性。
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